Globe-valve.



No. 7|3,|45. Patented. Novn, |902.

. `J. POWELL.

GLoBE vALvE.

(Application med Mar. 16. 1901.) (llo l'odel.)

. Witnesses @Ntra-n Sterns nfrnNr Fries.

JAMES P O/VELL, OF CINCINNATI, OHIO.

@Loes-VALVE;

SPECIFlCATION forming part of Letters Patent No. 713.145, dated November 1 1, 1902 Application filed March 16, 1901. Serial No. 51,487. (No modell T0 all whom, it muy concern:

Be it known that I, JAMES POWELL, a citizen of the United States of America, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Globe- Valves, of which the following is a specification.

The object of my invention is a globe-valve of the type that has a valve-stem which is screw-threaded and axially guided in relation to the valve-seat and has a rotation independent of the valve-disk, in'which the parts that vare subject to wear when worn may be reground easily to insure a snug fit between the valve and its seat, or when too much worn to be so remedied may either be changed in position, so as to present an unworn surfac or be replaced at littlev expense by a new part. This object is attained by the means described in the annexed specification and illustrated in the accompanying drawings, in which-l Figure l is a viewin central vertical longitudinal section of the valve-case and in elevation of the bonnet of the case, the valveseat, valve, and valve-stern. Fig. 2 is a detail view in elevation of the valve-stem and in central section of the guide-ring and the bonnet. Fig. 3 is a detail plan view of the valve. Fig. 4 is a detail view in elevation of the removable valve-seat at right angles to the position shown in Fig. 1. Fig. 5 is a detail View, upon an enlarged scale, of the joint between the neck of the valve-case, the bonnet, and their coupling-nut. 'Fig 6 isacentral vertical sectional detail view of the lower end of the valvestem.

Referring to the parts between admissionopening o and discharge-opening a', valvecase A has a horizontal diaphragm a2, which has a central perforation which seats a removable valve-seat, which consists of a ring B, having two downwardly-projecting lugs b b', which terminate in a screw-stem b2, which projects through a perforation in the bottom of the valve-case and upon therexterior of the case receives a screw-nut b3 to hold the valveseat securely in place.

Valve-case A has an upwardly-projecting eXteriorly-sorew-threaded neck o3 toA receive tions.

a screw-threaded nut a4 which bears down upon flange c of bonnet C and holds said ange snugly down upon the top of the neck. Below flange c the bonnet has a short annular lug c', which fits snugly against the smooth interior walls of neck a3. The edges and the top of neck as are beveled or rounded off, the inner edge more so than the outer, and the under side of flange c is grooved out to fit the neck, so that when nut a is screwed down tight lug c' forces the neck outwardly to tighten the threads of the'neck and of the nut together and presses the top of the neck and Harige c tightly v,'together, forming a tight joint and one that is not loosened by excessive fluid pressure.

"Bonnet O is interiorly.screw-threaded to engage the sore w-threaded portion e of valvestem e, which terminates at itslower end in av reduced screw-threaded portion e2, above .which is an enlarged portion e3 and a` collar e4,which'enters a circular depression c2 in the lower end of the bonnet when the valve-stern is inv its raised position. Between reduced portion e2 and enlarged portion e3 is a portion e5 intermediate in size between said por- Around portion e3 and against the under side of collarel1 ts a guide-ring e,

whose upper. end 'bears against the inner walls of neck a3 to guide the valve-stem to and from its seat. Guide-ring e6 has at its lower end a series of notches e7 and is normally free to rotate upon the;valvestem, but has in its side a: hole e3, through which a screw-pin e9 may be passed into a bore e14 in the stem to lock the Unido-ring from rotation thereon. Screw-pin e"v when not so engaged is retained in an axial vertical screw-threaded bore in the lower-end of the valve-stem, as shown in Fig. 1. l

Valve E consists ofn an annular disk having a central perforation @loof the same size as portion e5 of the Valve-stem. Around portion el@ the disk is beveled annularly upon each side, and around thebeveled rportions upon each-side are annular lugs of the same circumference as both the lower end of guidering e6 and the interior diameter of the valveseat. Each of said annular lugs has a series of teeth en, similar to and adapted to fit into the notches upon the guide-ring. Guide-ring IOO fiS

e6 and valve E are held upon the Valve-stem loosely between collar e4 and a nut @12, which is screwed upon the end e2 of the valve-stem. Upon the upper end of the valve-stem is a hand-wheel cl3, the turning of which carries the valve to and from its seat.

As is seen, the valve-stem may rotate free of the guide-ring and valve-disk, and the valve-disk has enough play upon its stem to allow it to lit its seat snugly.

Vhen the valve or its seat or both become worn, they may be ground in the following manner: Nut a4 is disengaged from neck a3, and the bonnet, the valve-stem, guide-ring, and valve are lifted out of the valve-case. Screw-pin e is then removed from the end of the valve-stem and is passed through hole es of the guide-ring into the valve-stem. Any suitable abradant is then applied to the valvedisk and the parts are again placed in the case, so that the valve bears upon its seat. Keeping nut a4 disengaged from neck a?, the valve-disk is rotated upon its seat with downward pressure until a proper bearing is obtained.

When the Valve-disk becomes too lunch worn upon one side to be remedied by regrinding, nut cl2 is removed, the valve-disk is reversed upon the stem, and the nut is replaced.

Should avalve-seat become too much worn, by removing nut b3 it maybe removed, and a new valve-seat may be substituted in its place at little expense.

What I claim is- 1. The combination of a valve-case, a Valveseat therein, a valve-stem having near 4its lower end an enlarged portion rounded on its lower edge and a reduced portion below said enlarged portion, a double-faced valve having a perforation to pass the reduced portion of the stem, and beveled portions upon each face surrounding the perforation to tit against the lower end of the enlarged portion, substantially as shown and described.

2. In combination with a valve stem, a guide-ring mounted rotatably upon the stem and having in its lower edge a series of notches, and a valve-disk having upon each side a series of teeth to interlock with the notches in the guidering, substantially as shown and described.

3. In combination with a valve-stem having a collar a short distance from its end, a guide-ring having its lower` end'notched, a valve-disk having teeth interlocking with the notched guide-ring and a nutupon the end of the stem to hold the guide-ring and valvedisk loosely between it and the collar, substantially as shown and described.

4. In combination with avalve-stem an annular guide-ring mounted rotatably upon the stem and havinginits endaseries of notches, a Valve-disk similarly mounted upon the stem and having teeth to interlock with the notches, and means for locking the guide-ring upon the stem, substantially as shown and described.

5. In combination with a valve-stem having a transverse perforation therein, a guidering mounted rotatably thereon and having a hole in its side and notches in its end, a valve-disk having teeth to interlock with the notches in the guide-ring and a screw-pin for passing through the hole into the perforation in the valve-stein, substantially as shown and described.

6. The combination of a valve-case having a neck exteriorly screw-threaded and with its upper edges beveled or rounded 0E, a bonnet having a ilange to rest upon the neck Whose under side is grooved counter to the rounded edges of the neck and a screw-threaded nut to engage the neck and the flange, substantially as shown and described.

7. In combination with a valve-stem having a transverse perforation in it and an axial bore in its lower end, a guide-ring mounted rotatably thereon and having a hole in its side and notches in its end, a valve-disk having teeth to interlock with the notches in the guide-ring, and a screw-pin to seat normally in the axial bore in the stem and when the valve is to be reground for passing through the hole into the perforation in the valve-stem, substantially as shown and described.

JAMES POWELL.

Witnesses:

' W. F. MURRAY,

GEO. J. MURRAY. 

